Ruby Walsh conjured a late rally out of Back In Focus to deny Aupcharlie as Willie Mullins claimed a one-two in the Topaz Novice Chase at Leopardstown.
The strong-travelling Aupcharlie was going the better on the run to the final fence but he pecked slightly on landing and could not pull far enough clear of his nearest pursuer.
Walsh kept at the Graham Wylie-owned seven-year-old on the long run-in and the 6-4 favourite battled on bravely to get up close home to score by a head. Texas Jack was third.
Mount Benbulben was pulled up after making a bad mistake as the field went out for the final circuit, while Tony McCoy's partner Jenari fell at the following fence and Lyreen Legend came down three out.
Mullins said: "That's a fantastic win. We didn't think for one minute that Ruby would get back up until he did. He needs every inch of three miles and ground even softer that that. He's a real winter horse.
"As much as I'm delighted I'm sorry for Aupcharlie and Andrew Lynch. It was only his second run over fences and he's run a fantastic race.
"Back In Focus has the RSA written all over him. We'll look for a race over three miles for him.
"With Aupcharlie we could look for the Dr P.J Moriarty. We'll keep them apart. There is no point in them taking each other on again. Aupcharlie could be a horse for the Jewson. The way he jumped he could even come back to the minimum trip. They are two horses to look forward to."
Stan James cut Back In Focus to 12-1 from 16s for the RSA, with Aupcharlie 10-1 from 16-1 for the Jewson Novices' Chase.
Spokesman Joseph Burke said: "Back In Focus proved he's all about stamina after he just got up to prevail by a head on the line from stablemate Aupcharlie, who appeared to just run out of steam. Willie Mullins won the Jewson last season with Sir Des Champs."
25 October 2014Steip shock as Ship sinks
Blaklion sounds War cry
Trophy proves a stroll in Park
Roan reward at last for Wishfull
Muir full of praise for Code
Hawk swoops for Aintree prize
Smaih shines for Hannon
McCoy delighted with World hero
PJA and BHA issue fraud warning
'Enigma' Seanie ready for Knockaire
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Sir Max clinches Mercury gold
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Hurricane in hat for Morgiana
Buick happy as a Star is born
King ace back in the Old routine
McCoy makes Chepstow return
Botti seeking Astrelle celebration
24 October 2014Ballyalton out for the season
Hutchinson sits out weekend action
Balding sweet on Park chance
Walker hoping for Glorious victory
Times out to make Newbury headlines
Cheltenham honour leading figures
Moore keen on Adelaide chance
Stevens back for Breeders'
Johnson Houghton fined
Duke lords it at Carlisle
Southwell first for O'Brien
Fenton fined over steroids
Buywise on the money at Ludlow
Lockinge the big plan for Toormore
Stone ruled out of Old Roan
Wetherby likely for First run
Elm tops Trophy octet
23 October 2014Fenton guilty of drugs possession
Williams hoping for Max power
Harty biding his time with Lane
Clonmel aim for Baily
Jezki possible for Morgiana bow
Harrington expects Naylor to shine
Gosden a Fan of Newmarket scorer
Northern aces face off in Cumbria
Murphy plagued by shoulder injury
Dynaste charts direct Haydock route
O'Brien outlines Breeders' plans
Wetherby-bound Taquin to duck Power
High hopes for Adelaide run
Gilgamboa waits on ground
Dandino misses Cup date
22 October 2014December date for Balding memorial
Deputy outgunned at Fontwell
Whisky chasing Power spoils
Burke maps out Odeliz targets
Present sights set on Power prize
New category for all-weather champs
Moviesta has sales date
National aim for O'Neill star
Cheltenham on Ginge agenda
Lewis eyeing Dubai success
Henderson handed Ascot role
Panther given Breeders' go-ahead
Plain sailing for perfect Storm
Big Easy sets sail for Open fixture
Hall monitored for Giant Bolster
Stomachion in November frame
Hughes revels in 'sweet' success
BHA moves to address small fields
Connell turns to Heskin
Integral to race on next year